A/N: This is just a prologue chapter. Please give me constructive criticism so I can do better. Now let's go.

Proof read by Thatguywhowrote.

-II—II-

(Ryuunosuke's POV)

I am Uryuu Ryuunosuke, your average serial killer in action. Today I found some book my ancestor left and decided to read it. Apparently, you can summon a demon with it. How cool, it made me feel all pumped-up. I always treated myself as demon, but how about a true demon? I am nowhere near them, that's why I was going to summon one and see to it myself.

Today, I killed a family of some random citizens in their house. There were three people there, a man, a woman, and a boy with red hair same as mine. I killed everyone except the said boy, I tied him up so he could be sacrificed to demon I will call out.

I opened the ominous-looking book and started to read the incantations. Hmm... Okay.

Fill fill something... yeah.

Well whatever. Oh yeah! I forgot to draw the magic circle. How should I draw it? With blood of course, because it's cool! I used the woman's blood for this.

I chopped her arm off of her torso and squeezed the flesh so the blood could pour out, I started drawing some neat looking patterns that I saw on an anime.

The boy looked horrified, seeing his mother's arm as a drawing tool. Don't worry boy, you will meet Mr. Demon soon.

Okay it's done! Perfect, if I must say. Just like the one on the book, now for the incantation...

"Iron clad blablabla," I just skipped some of it. It's too complicated for my taste. I just wanted to see a demon and how he killed people.

...nothing happened. Did I screw something up? Should I really chant the words to the punctuation marks? Ugh, annoying.

But something happened. A bright flash of light appeared and illuminated the entire surrounding. So this book was not just some fairy tale, huh?

Ohh! Did I do it? Did I, Ryuunosuke, really summon a true demon?

And there it stood, after the bright flash, a fairly tall skeleton adorned with a neat looking robe that gave him the aura of a ruler, wielding a staff with a complicated design and on the tip were snakes with each of them holding a gem. This being was just like the typical demon king in an anime. Its mere presence felt like certain death. I got a bad vibe from him but it's exciting. To see a genuine demon brought great joy to me.

"Whoa cool! I just summoned one, and to be honest a badass-looking demon. Nice to meet you, er... Lord Bony. My name is Uryuu Ryuunosuke, just your ordinary killer." I said as I bowed in respect.

The skeleton didn't reply immediately and gazed at his surroundings. Maybe the sudden summoning and the death of the people around him left him speechless? Damn I'm good. I know my art of killing will be recognized by someone in the future. Or is he angry at me? Because I called him Lord Bony? Ooh creepy, but I wanted to see how demon gets angry. But first...

"Oh here! I brought some food, please eat it as you see fit." I gestured towards the boy tied with rope as a sacrifice. The skeleton appeared to ponder.

He looked at the boy and went closer to him. And then, he touched it. Did he want to examine the quality of his food? Well, even demons have their tastes. Looks like I learned something new here.

But to my surprise, when he touched him the boy's eyes became completely white and his skin went pale. Wait, I remember this in a movie... The demon just ate his soul through physical contact, that's frickin cool!

"Did you just kill it with a single touch!? With that bony finger of yours? Such a swift death left me in awe! Then it's decided, I shall become your loyal servant. Please, let me see another spectacle Demon-sama."

He look at me with that hollow skeleton socket and then gesture something.

"Mid-tier summon: Death knight." He said and gestured something with his hand. A dark mist–like miasma came out of his finger and enveloped the corpse of the boy and his mutilated parents.

It began to cover the bodies and soon, three skeleton knights appeared. Looks like he used the corpse of those people to create them.

How should I describe this?

...

...it's the coolest fucking thing I've ever seen!

Did I just summon a demon king!? And what I saw here, is that he created his own minions, from the corpses into big skeleton knights.

"You're my lord and savior. Please give me, your humble servant your glorious name so I can carve it upon my heart and soul." I bow dramatically. I hope he liked my drama-acting which was befitting this scene.

"Call me Ainz. Now follow me." He gestured to follow him using his skeletal hand. Oh, with pleasure! I wanted to see some artistic way of killing again in the future. Just thinking about it made me shiver in anticipation.

-II—II-

(Momonga/Ainz'POV)

I saw nothing. There was nothing as far as my eyes could scan the endless dark void. I don't really remember what happened.

What I remember was that I'm Suzuki Satoru. The magic caster and player of YGGDRASIL. I also remembered all my skills and gameplay as a magic caster. But a bit vague.

I couldn't even feel my body. Did I already die? Was this how it was like to die?

And suddenly, there was a bright flash of light in front of me and before I knew it I was being sucked into it.

When I opened my hollow eyes, I saw some kind of living room. And there stood a boy in his teens, a mutilated corpse of woman and a man. Somehow, I didn't feel sick. I couldn't even say I cared, I only felt a slight sense of pity for them. When did I turn into a monster? But I felt that it was a natural occurrence.

Looks like I still had my game character appearance. Wait, did I always have my game character appearance? My mind was really fuzzy.

"Whoa cool! I just summoned one, and to be honest a badass-looking demon. Nice to meet you, er... Lord Bony. My name is Uryuu Ryuunosuke, just your ordinary killer." The teen said.

Those eyes. I'm quite familiar with them, the eyes of one who loved killing for fun... Disgusting.

Should I kill him? However, my mind told me not to else I would vanish.

I looked around and spotted another person. It was child with a frightened face. Maybe he was afraid of seeing these scenes before him? Of course he was, especially if they were his parents. He was tied with rope, I would release him and ignored this psychotic guy, but then he spoke.

"Oh here! I brought some food, please eat it as you see fit." Did he think I was also a psychotic killer? Even I wasn't a cannibal in my previous life, why should I eat him? I don't like needless death.

So I released him, my humane side felt pity for them since I once was Suzuki Satoru. When I began to touch his body I screwed up, my death touch skill was still active, I forgot to turn it off. Anything I touched will have a slight chance of being instantly killed and this child just died from it.

Now I was a bit upset. I ought to be more careful in the future.

"Did you just kill it with a single touch!? With that bony finger of yours? Such a swift death left me in awe! Then it's decided, I shall become your loyal servant. Please, let me see another spectacle Demon-sama." He said with his wicked eyes glimmering. He reminded me of someone in YGGDRASIL...

But I couldn't let their corpses go to waste, I remembered that death knights consumed human flesh as vessels, so I tried it if was true or not.

"Mid-tier summon: Death knight." I said, chanting the name of spell. The dark mist began to seep out of my finger and enveloped the mutilated corpses and the child, resulting to the birth of three deathknight. Mad guy beside me looking at me with awed expression.

"You're my lord and savior. Please give me, your humble servant your glorious name so I can carve it upon my heart and soul." This fellow is really annoying... But if he really swore his loyalty to me then I could use it to my advantage. Looks like this wasn't my world, or at least my era. This guy can be my informant, I needed to refrain from killing him.

I could and convert him into a death knight if I wanted to, but that would mean I had to find a new master.

I hope no other servants would approach me yet, since I needed to gather more information. Wait, servant? That's foreign knowledge. And holy grail, why does this information kept coming?

Well whatever, I would do something about it later. For now I had to leave. I introduced myself to this Ryuunosuke fellow and searched for a base. I wondered how strong the other servants are...

END

A/N: Hope this is enough, I don't have time to write more, and I'm an impatient person, as you can see. Until next time, farewell.

P.S: Sorry if its too OOC and lack of common sense.